Revert of Remove webrtc/libjingle/{xmllite,xmpp}

webrtc/libjingle/xmpp/util_unittest.h

+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_LIBJINGLE_XMPP_UTIL_UNITTEST_H_
+#define WEBRTC_LIBJINGLE_XMPP_UTIL_UNITTEST_H_
+
+#include <sstream>
+#include <string>
+#include "webrtc/libjingle/xmpp/xmppengine.h"
+
+namespace buzz {
+
+// This class captures callbacks from engine.
+class XmppTestHandler : public XmppOutputHandler,  public XmppSessionHandler,
+                        public XmppStanzaHandler {
+ public:
+  explicit XmppTestHandler(XmppEngine* engine) : engine_(engine) {}
+  virtual ~XmppTestHandler() {}
+
+  void SetEngine(XmppEngine* engine);
+
+  // Output handler
+  virtual void WriteOutput(const char * bytes, size_t len);
+  virtual void StartTls(const std::string & cname);
+  virtual void CloseConnection();
+
+  // Session handler
+  virtual void OnStateChange(int state);
+
+  // Stanza handler
+  virtual bool HandleStanza(const XmlElement* stanza);
+
+  std::string OutputActivity();
+  std::string SessionActivity();
+  std::string StanzaActivity();
+
+ private:
+  XmppEngine* engine_;
+  std::stringstream output_;
+  std::stringstream session_;
+  std::stringstream stanza_;
+};
+
+}  // namespace buzz
+
+inline std::ostream& operator<<(std::ostream& os, const buzz::Jid& jid) {
+  os << jid.Str();
+  return os;
+}
+
+#endif  // WEBRTC_LIBJINGLE_XMPP_UTIL_UNITTEST_H_